Winding for electromagnets.



INVENTOR I PATENTED MAY 14, 1907.

III

."i iii W. M. BRADSHAW. WINDING FOR BLEGTRO MAGNBTS.

APPLICATION FILED APR. 28. i906 AT/TORNEY UNITED STATES PATENT OFFICE.

WILLIAM M. BRADSHAW, F WILKINSB'URG, PENNSYLVANIA, ASSIUNOR'TO WESTlNGllOUSE ELECTRIC & MANUliAUTURlNG COMPANY, A CORPORA- TION OF PENNSYLVANIA.

WIN-DING FOR ELECTROMAGNETS- To (all whom (It may concern.

Be it known that 1, WILLIAM M. BRAD- slIAW, a citizen of the United States,- and. a resident of Wilkinsburg, in the county of Allegheny and State of Penns lvaniag have'invented a new and useful improvement in Windings for Electromagnets, of which the following is a specification.

My invention relates to windings for electro-magnets, and it has for its object to providea winding of large current-carrying capaeity for U-shaped magnet cores which shall occup a small amount of space and which shall be easy and inexpensive to manufacture.

In the. manufacture of electrical instruments and other translating devices it is quite customary to adapt them todifferent ranges of current capacities by adjusting the numbers of convolutions and the dimensions of the conductors in the windings thereof in accordance with the desired conditions of 'ing a winding constructed in accordance with my invention, and Fig.. 2 is a, bottom lan view of the core and winding shown 1n Tvothlegs of an U-shaped ma netizable laminated core 1 are surrounded y a substantially rectangular loop of strap conductor, to one end ofwhich a split terminal piece 3 is rigidly secured. The terminal piece is provided with flanges 4 and 5 along the edges of the s lit in one of which screws 6 are threade and by means of which the terminal piece may be clamped about an external circuit terminal (not shown). The magnetizable core 1 is located close to one of the longer sides of the rectanguiar loop 2 to which is'secured, by means of tap screws 8, one end of the body portion of a T-shaped bar or ieee v7 that is located between the legs of t e U shaped core. The headof the Specification of Letters Patent.

Application filed April 28, 1906. Serial No- 314,210.

Patented May 14, 1907.

T-shaped piece 7 is located in the space between the magnetizable core and the side of the rectangular loop opposite that to which the extremity of the body of the T-shaped piece is secured, and it is extended upwardly out of the plane of the rectangular loop and beyond the end thereof" opposite that to which the terminal. piece 3 is secured. The extremity of the extension of the T-shaped piece 7 is also provided with a split tubular terminal piece 9 having flanges 10 along the edges of the split, one of which is threaded for the reception of clamping screws 11. i

- To explain the operation of the invention, it may be supposed that current is supplied to y the winding through terminal piece 3, from whence it the rectangular oop in opposite directions around the legs of the magnetizable core and then through the T-shaped piece 7 to the ter minal piece 9. It will be understood from the directions in which the currents traverse the winding that fluxes are induced in opposite directions in the legs of the magnetizable core, and consequently one leg Wlll be the north pole of the magnet and the other the south ole.

asses through the sides cl- Obviously, the structural details of the parts may be considerably varied from what as been specifically shown and described Without altering the mode of operation ofthe invention or departing materially from its spirit and I desire that all such modificationss all be included within its sc'ope. I claim as my invention:

1. A Winding for electro-magnets .comprising a loop and a bar that extends from one side of the loop partially across the area included thereby.

2. A winding for electro-magnets comprising a loop, a bar that extends from one side of the loop partially across the area included thereby, and terminal pieces that are attached res eetively to the loop and to the free end of tie bar.

3. A Winding for electro-magnets coinprisinga loop, and a bar that extends from one side of the loop artially across the area included thereby an thence outwardiy from the planeof the loop.

'4. A winding for electro-magnets comprising a loop, a bar that extends from one side of the loop partially across the area ineluded thereby and thence outwardly from the dune oi" the loop, and terminal pieces for the loop and 'tlm'iree' end of the bar.

5. A winding, for clcctrii-magnets co1n- 5 prising-o loop-and a Tshaped piece one extremity ol the body of which is o|ncd to one side of the loop.

(3. A winding for elcctrii-niagnets coniprising a loop, a T-shoped piece one ex 0 trcmity of the body of which is joined to one side of the loop, and terminal pieces for the loop and the hcud o'l' the T-shapcd "piece.

7. A winding for elcctrii-mngncts comprising a loop, :1. T-shaped piece one extl'emity of the body of which is joined to one side of the loop and the head of which is extended outwardly from the plane of and he yond the limit of the loop, and terminal pieces for the loop and the extension of the :0 cross bar of the T-sheped piece.

8. The combination with an U-shaped lnagnetizable core, of a winding therefor comprising a loop that surrounds both legs thereof and a bar that extends from one side of the loop partially across the area included thereby and between the legs of the core.

9. The combination with an U-shaped magnetizeblc core, of a winding therefor com-- prising a loop that surrounds both legs there- 3 o of, a bar that extends from one side of the loop partially across the area included thcreby and between the legs of the core, and terminal pieces for the loop and the free end of the said barb V 10. The combination with an U-shaped magnctizsble core, of a'winding therefor comprising a loop that surrounds both legs thereof, and a, T-shaped piece the body of which is joined to one side of the loop and is 10- 4o .eated between the legs of the core and the head of which, occupies a space between the core and the other side of the loop.

11. The combination with an U-shapcd magnetizahle core, of a winding therefor comprising a loop that surrounds both legs thereof, and n T-shnped piece the body of which is joined to one side of the loop and the hood of which occupies the space between the core and the other side of the loop, and an extension of the head of the T-sha )ed piece that extends outwardly from the plane of and beyond the limits of the loop.

12. The combination with an U-shapcd n1egnotizable.core, of a winding therefor comprising, a loop that surrounds both legs thereof, and a T-shaped piece the body of which is joined to one side of the loop end is located between the legs of the core and, the.

head of which occupies the space between the core and the other side ol-the loop, on extension of the head of the T-shaped piece that extends outwardl from the plane of and beyond the limits of the loop, and terminal pieces for the loop and the extension of the T-shaped piece.-

13. An electro-magnet coil com )rising a loop and a detachable her one end 0 which is attached to one side of the loop and the other end of which isadjacent to the opposite side of the loop.

14. An electro-ma net coil comprising a loop having a terminal clamp, and a bar that extends from one side of the loop nearly to its opposite side andIis-provided with a terminal clam '15. An clectroqn'a'g'net coil comprising e 100 having a terminal connector at one end an a bar that extends from one side nearly to the opposite side and the free end of which is provided with a terminal connector.

In testimony whereof, I have hereunto subscribed my name this, 23rd day of April, 1906.

WILLIAM M. BRAINHAW 'Witnesses:

PAUL MAOGAHAN, BIRNEY HINEs. 

